Fastening device for lenses



pril lll, 1936.

D. SLOTSKY FASTENING DEVICE FOR LENSES Filed April 5, 1935 if n /45 INVENTOR.

UNITED STATES PATENT OFFICE v 2,031,279 FAs'rENrNo nEvrcE Fon LENsEs half to L. Lee Krost, Cleveland, Ohio David Slotsky, Cleveland, Ohio, assigner of one- Application April 3, 1935, Serial No. 14,480

L15 Claims.

My invention relates to the fastening of the mounting of a spectacle to the lens of the spectacle. This fastening is for use in fastening the nose or bridge piece to the lens, foruse in fastening the temple or ear piece to the lens, and for the fastening of any other type of mounting to the lens, in all cases Where the mounting is to be secured, fastened, or engaged in 'conjunction with a-hole provided in the lens.

An object. of my invention is to provide a secure and adequate fastening of the mounting to the lens without the use of screws or threaded bolts or threaded nuts. It is a matter of common knowledge in the art that screws sometimes become loosened and provide an insecure fastening. It is also Well known that the screws sometimes become so loose as to become entirely disengaged, thereby permitting the removal of the lens from the mounting. To those acquainted in the art, it is also well known that, when the` fastening of the mounting to the lens becomes even slightly loose, the play between the lens and the mounting tends to induce a fracture of the lens.

The nature of my fastening device is such that it cannot become loose after it is once permanently connected, unless it is disconnected by the application of 'heat to the binding substance in the fastening.

Another object of my invention is to provide a, simple and eflicient means for the fastening of the mounting to the lens. My fastening device is easily installed and requires little skill in assembling the parts.

Still another object is to provide a fastening which will afford a certain resiliency between the mounting and the lens.

A still further object of my invention is a process for fastening the mounting of a spectacle to the lens by using telescopic members and binding material.

My invention also provides a more economical fastening, doing away with the use of a threaded screw.

Other objects and a fuller understanding of my invention may be had by referring to the following description and claims, taken in conjunction with the accompanying drawing, in which like parts are designated by like reference characters, in which:

Figure 1 represents a pair of spectacles with which my invention may be employed;

Figure 2 represents a fragmentary cross-sectional view of my mounting taken along the line 2-2 of Figure 1;

Figure 3 represents a female tube member and a male pin lmember which is adapted to fit within opening of the female tube member;

Figure 4 is a view similar to Figure 3 wherein I illustratev a modied form of my male pin member; i t. 5

Figure 5 is a view similar to Figure 3 except that both the female member and the male member are constructed of tubes;

Figure 6 is a view similar to Figure 4 except that the female tube member is provided with a 10 longitudinal slit;

Figure 7 is a view similar to Figure 6 except that I show a pin member having the same construetion as the pin member shown in Figure 3;

Figure 8 is a view similar to Figure 5 except 15 that the female member is provided with a longitudinal slit and having its enlarged end closed;

Figure 9 is a View similar to Figure 3 exceptthat the male member is hollow and has open ends and is provided with a longitudinal slit;

Figure 10 shows another arrangement of my fastening pins wherein the female member is hollow andl has its enlarged end closed and the male member is the same as the male member shown in Figure 9; 3;,

Figure 11 shows another modified form of my pin member wherein the female member is like the female member shown in Figure 7, and the male member is hollow and its enlarged end closed and provided with a longitudinal slit; ,'39

Figure 12 shows afurther modified form of my pin mounting where the female member is like the female member shown in Figure 10 and the male member is like the male member shown in Figure 8; and y Figure 13 shows a modied form of a mounting employing the combination of the pin mountings shown in Figure 5.

My invention is shown as being employed with the pair of spectacles shown in Figure 1 in whch 4 the mounting of the temple piece is designated by the reference character 2l and the mounting of the nose piece is designated by the reference .character 20. In the ordinary construction for spectacles the mounting comprises an inner strap 22 and an outer strap 23 which are respectively provided with openings 3S and 3l which register with the hole 26 in the lens 21, see Figure 2. I-Ieretofore the straps have been mounted to the lens of the spectacles by means of screws which in the ordinary course of the use of spectacles are disposed to become unloosened.- The purpose of my mounting is to provide for connecting the straps to the lens without the use of screws.

In general my screwless mounting or fastening device comprises the combination of a female tube member 25 and a male pin member 24 adapted to fit within the female tube member. As shown best in Figure 3 the female tube member may be constructed of a hollow piece of metal usually in tubular form having both ends open. One end of the female tube member 25 is flanged so as to form a shoulder or enlarged end portion 29. lThe main part of the female tube member is constructed of a longitudinal 'portion 35 which fits within the opening 31 in the upper strap 23 and the opening 2Bin the lens 21. The longitudinal opening inthe female member is designated by the reference character 33.

The male member 24 as shown in 4Figures 2 and 3 is constructed of a solid piece of metal and has a longitudinal portion 34 providedat one end with a shoulder or an enlarged end portion 28. The diameter of the longitudinal portion` of the male pin member 24 is of such size as to'fit within the opening 33 of the female tube member 25.

' In mounting the straps 22 and 23 of the lens 21 let us assume that the straps 22 and 23 have been placed over the lens 21 and having the openings 36 and 31 thereof register with the opening 26 in the lens 21, as the straps 22 and 23 and the lens 21 are arranged in their proper position. The longitudinal portion 35 of the female member 25 is inserted through the opening 31 in the strap 23 and into the opening 26 of the lens 21. Also the longitudinal portion 34 of the male pin member 24 is inserted through the opening 36 in the strap' 22 and into the opening 33 of the female member 25. After this, the female member 25 and the male member 24 are pressed tightly together until the shoulder 29 of the female member 25 and the shoulder 28 of the male member 24 respectively engage the straps 23 and 22, thereby making a good telescopic connection between-the female member and the male-member. Any suitable means may be employed to secure the femalemember 25 and the male member 24.

together. To this end, I illustrate any suitable binding substance 3| sufficient, for example, as solder, chemicals, or any other suitable substance. The solder 3| or other binding substance is inserted in a molten state through the open outer end of the female member 25 and the solder fills all of the crevices between the female member 25 and the male member 24, and when the solder or other substance solidies, the two members are firmly held together. In order to effect a more pleasing appearance, I arrange to place a. metallic cap 30 over the solder or other chemical substance 3| while still in the molten condition so that after the solder or other chemical substance 3| solides the cap is held in a fixed position.

In this manner the straps 23 and 22 of the mounting are permanently connected to the lens 21 by the. use of my fastening device without the aid of screws or threaded bolts.

As a means to facilitate the mounting of my fastening device the soldering substance 3| may be inserted within the longitudinal opening 33 of the female member 25 before assembling. In actual practice, I find that the solder which is inserted within the opening of the female member 25 does not necessarily have to fill all of the opening 33 but only sufficient solder needs to be inserted therein to make a good soldered connection. Therefore, when using a female member 25 and solder inserted within the opening 33, it is only necessary to press the female member 25 and the male member 24 together while at the same time applying heat for melting the solder. It is to be pointed out that the opening 33 of the female member extends throughout the length thereof so that in case excessive solder is used the surplus may overflow permitting the female member 25 and the male member 24 to be tightly lpressed together. Also by reason of the fact that the opening 33 extends throughout the length of the female member 25, it is possible to use a small electrically heated member to be inserted in the opening 33 for melting the solder as well as pressing the solder within the crevices between the female member and .the male member and pressing the two members together. In the employment of my fastening device it is understood that my invention is not limited to the type of female member 25 and the-male member 24 and shown in Figures Z-and 3. To this end, I il1ustrate a series of definite types of members andvarious combinations thereofl which may be used in the mounting shown in Figure 2.

In Figure 4 the female member 25 is similar to the female member illustrated in Figure 3, it being hollow and being provided with open ends. The male member 4| is a modification of the male member 24 and has a shoulder'or enlarged end portion 42 and a longitudinal portion 43. The longitudinal portion 43 is provided with a, series of illustrated ridges and indentations adapted for the better securing of the soldering material 3|. Y Figure illustrates the female member 25 similar to the female member 25 illustrated in Figure 3. The male member 45 is shown in a modified form in that it is hollow and has open ends. The reference character 46 is the. shoulderor the enlarged end portion of the male member 45 andthe reference character 41 represents the longitudinal portion of the male member 45.

Figure 6 illustrates a modified form of the female member and is shown as reference character 49. The female member 49 is hollow and has open ends. It has a shoulder or enlarged end portion 5|) and a longitudinal portion 5|. There is a slit 52 in the side of the longitudinal portion 5|. The purpose of the longitudinal slit 52 is to make it possible for the circumference thereof to be expanded or compressed to accommodate or fit into the opening of the lens. In other words, if the opening of the lens is slightly larger than the outer circumference of the longitudinal portion 49, then the lormitudinal portion 49 of the female member 5| may be expanded to make it fit snugly against the inner walls of the opening of the lens. Also, if the opening of the lens is too small the longitudinal portion 49 of the female member maybe compressed to fit into the opening of the lens. It is to be noted also that by reason of the longitudinal slit there is provided a resiliency between the lens and the straps of the mounting. The male member 4| is the same as the male member 4| of Figure 4.

Figure '7 illustrates a female member 49 the same as illustrated in Figure 6 and a male member 24 the same as illustrated in Figure 3.

Figure 8 illustrates a modified form of the female member 53 which is hollow a i d has a longivfemale tube member and also of greater diameter as illustrated in Figure 3. The modified male member 58 is hollow and has open ends. It has a shoulder or enlarged end portion 59 and a longitudinal portion 60, said longitudinal portion 60 having a slit 6I.

Figure 10 illustrates a modified female member which has a shoulder or enlarged end portion 16 and a longitudinal portion 11. 'I'he female member 15, is hollow and has a closed end at the shoulder oran enlarged end portion 16. The male mmber 58 is similar to the male member 58 in Figure 9.

In Figure 11, the female member 49 is the same as illustrated in Figure 6. The modified male member 19 is hollow and hasA an enlarged end portion 8| and a longitudinal portion 80. said longitudinal portion 80 having a slit 82. The shoulder or enlarged end portion 8| has a closed end.

In Figure 12 the female member 15 is the same as that illustrated in Figure 10 and the male member 45 is the same as that illustrated in Figure 5. f

In all of the members illustrated and combinations shown, the longitudinal portion of the female member is adapted to receive the longitudinal portion of the male member in telescopic connection.

It is to be noted in all of the forms of my telescoplc members that either one or both of the members have open ends to facilitate the use of solder or other suitable binding substance.

In Figure 13, I show how my telescopic members may be used in a different type of mounting. In the mounting illustrated, the telescopic members are the same as those shown in Figure 5 and the members are inserted within the opening 69 of the lens 10, after which they are suitably bound together by the soldering substance 13, as explained before. After the telescopic members are mounted within the opening 69 the straps of the mounting are placed over the telescopic members and heated by any suitable means which causes the soldering substance 13 to conneet or bind the telescopic members to the inside surfaces of the straps 1l and 12. It is to be pointed out, however, that any particular cornbination of the telescopic members may be used in this mounting as well as those shown.

Although I have described my invention with a certain degree of particularity, it is understood that the present disclosure has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and the scope of the invention as hereinafter claimed.

I claim as my invention:

1. A fastening'clevice adapted to attach the two straps of a spectacle mounting to the lens of a spectacle by employing a binding material, the straps and the lens respectively having aligned holes for the receiving of the said fastening device, comprising, in combination, a male pin member having a shaft and an enlarged end portion of greater diameter than the shaft of said male pin member and of greater diameter than the hole in one of the said straps, a female hollow tube member, said female hollow tube member being hollow throughout its length with open ends and being-adapted to receive the binding'materi'al, and having a shaft of smaller diameter than the hole in the lens, one of said ends of the female tube member being enlarged and having a greater diameter than the shaft of said than the hole in the other of' said straps, said female tube member having a bore larger than the shaft of said male pin member, ,the shaft of said male member being of such length that the inserted end 4is at a distance from the enlarged end of the female member when said members are placed in posltion,'and binding material positioned adjacent to said inserted end and the female member for engaging and binding together said members, said binding material contacting a portion of one of said members within said distance between `said ends, the combination of the male pin member, the female tube member, and the binding material being such that the shaft portion of the female tube member may be inserted through the hole in one strap and into the hole of the lens so that the enlarged end of the female tube member engages the said strap and being such that the shaft of the male pin member may be inserted through the hole of the other of said straps and into the open end of the female hollow tube member, thereby making the enlarged end of the male pin member engage said strap, and the said members being bound together by said binding material.

2. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle by employing a binding means, the straps and the lens respectively having holes for the receiving of the said fastening device, comprising, in combination, a male pin member having a body portion and a shoulder portion, the shoulder portion being on one end of the male pin member and being of greater diameter than the body portion of said male pin .member and being of greater diameter than the hole in the strap through which the body portion of the male pin member is inserted, said male pin member having indentations and ridges upon the said body portion adapted to engage said binding means, and the body portion being of smaller l diameter than the hole in the lens and of smaller diameter than the hole in the strap through which the body portion is inserted, a female hollow tube member, said female hollow tube member being hollow throughout its length with open ends and being adapted to receive the binding means, and having a cylinder portion on one end and a flanged portion on the other end, the cylinder portion being slightly less in diameter than the hole in the lens and less. in diameter than the hole in the strap through which the cylinder portion is inserted, and the flanged portion being greater in diameter than the hole in the strap through which the cylinder portion is inserted, the said female tube member being adapted to receive the body portion of the male pin member within the opening of the cylinder portion in telescopic connection, the body portion of said male member being of such length that the inserted end is at a distance from the flanged portion of the female member when said members are placed in position, and binding material positioned adjacent to said inserted end and the female member for engaging and binding together said members, said binding material contacting a portion of one of said members within said distance between said inserted end and said flanged portion, the combination of the male pin member, the female tube member, and the binding means, being such that the cylinder portion of the female tube member may be inserted through the hole of one strap and into the hole of the female tube member engages the said strap and b'eing such that the body portion of the male pin member may be inserted through the hole of the other strap and into the opening of the cylinder portion of the female tube member to a point that the shoulder portion engages the said strap, and so that said members are bound together by said binding means.

3. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle by employing a binding means, the lens having a hole for the reception of the said fastening device, comprising, in combination, a female hollow tube member, said female hollow tube member being hollow throughout its length with open ends and having a shoulder portion at one end larger than the bore of the hole in the lens and a cylinder portion at the other end of slightly smaller diameter than the bore of the hole in the lens, a male hollow tube member, said male hollow tube member being hollow throughout its length with open ends and having a shoulder portion larger than the bore of the hole in the lens at one end and a cylinder portion at the other end of slightly smaller diameter than the bore of the cylinder portion of the female tube member, and binding means for engaging and binding together said members the combination of the female tube member, the male tube member, and binding means being such that the female tube member may be inserted into the hole of the lens from one side of the lens, the shoulder portion engaging the side of the lens and being adapted to engage one of the straps, and being such that the male tube member may be inserted from the other side of thelens into'the opening of the cylinder portion of the female tube member, the shoulder portion engaging the other side of the lens and being adapted to engage the other strap, the two tube -members forming a telescopic connection, and the said members being bound together by said binding means.

4. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a hollow female member, said hollow female member being hollow throughout its length withopen ends and having a shoulder portion at one end thereof adapted to engage the strap on one side of the lens and having a longitudinal portion, said longitudinal portion being adapted to engage in the hole of the lens, a male member having a. shoulder portion on one end thereof adapted to engage the strap on the other side of the lens and having a longitudinal portion adapted to enter the open end of the female member to form a telescopic connection between the two members, the longitudinal portion of said male member being of such length that the inserted end'is at a distan from the shoulder portion of the female portion when said members are placed in position, and binding material positioned adjacent to said inserted end and the female member for engaging and binding together said members, said binding material contacting a portion of one of said members within said distance between said inserted end and said shoulder porfrom the other side of the lens into the open end of the female member to form a telescopic straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a female member having a shoulder portion at one end thereof adapted to engage the strap on one side of the lens and having a longitudinal portion having an opening, said longitudinal portion being adapted to engage in the hole in the lens, and a hollow male member, said hollow male member being hollow throughout its length with dpniends and having a shoulder portion on one end thereof adapted to engage the strap on the other side of the lens and having a longitudinal portion adapted to enter the opening of the female member to form a telescopic connection between the two members, and binding material for engaging and binding together said members, the combination of the female member,l the male member, and the binding material being such that the longitudinal portion of the female member may be inserted into the hole of the lens from one side of the lens and being such that the longitudinal portion of the male member may be inserted from the other side of the lens into the opening of the female member to form a telescopic connection and being bound together by said binding material.

6. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a hollow female member, said hollow female member being hollow throughout its length with open ends and having a shoulder portion at one end thereof adapted to engage the strap on one side of the lens and having a longitudinal portion, said longitudinal portion being adapted to engage in the hole in the lens, a hollow male member, said hollow male member being hollow throughout 'its length with open ends and having a shoulder portion on one end thereof adapted to engage the strap on the other side of the lens and having a longitudinal portion adapted to enter the open end of the female member to form a telescopic connection between the two members, vand binding material for engaging and binding together said members, the combination of the female member, the male member, and the binding material, being such that the longitudinal portion ofthe female member may be inserted into the hole of the lens from one side of the lens and being such that the longitudinal portion of the male member may be inserted from the other side of the lens into the open end of the female member to form a telescopic connection, and being bound together by the said binding material.

7. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a female member having an end portion and a longitudinal portion, said end portion being adapted to engage the strap on one side of the lens and the said longitudinal portion being adapted to be inserted into the hole in the lens and said longitudinal portion having a hollow opening, and having a slit in the side of the part of said longitudinal portion which is within the hole in the lens, said slit enteringinto the hollow opening 'in the lens adapted to give the longitudinal porof the longitudinal portion, a male member having an end portion and a longitudinal portion, said end portion being adapted to engagethe strap on the other side of the lens and said'longtudinal portion adapted to enter the hollowZope-ning of the female member to form a telescopic connection with said female member, and binding material, for engaging and binding together said members, the combination of the male member, the female member, and the binding material being such that the longitudinal portion of the female member may be inserted into the hole in the lens on one side of the lens and the male member may be inserted in the hole in the lens from the other side of the lens and into the hollow opening of the female member to form a telescopic connection between the two members, and being bound together by said binding material.

8. A fastening device adapted to attach the straps-of a spectacle mounting to the lens of the spectacle by employing a binding material, the lens having a hole for engaging the fastening device comprising, in combination, a female member having an end portion and a longitudinal portion, said end portion being adapted to engage the strap on one side of the lens and the said longitudinal portion being adapted to be inserted into the hole in the lens and said longitudinal portion having a hollow opening, a male member having an end portion and a longitudinal portion, said longitudinal portion having a hollow opening, said end portion being adapted to engage the strap on the other side of the lens, and the said longitudinal portion being adapted to be inserted into the hole in the lens and being adapted to enter the hollow opening of the female member to form a telescopic connection between the two members, the longitudinal portion of the male member having a slit in the side of the part which is within the hole in the lens, said slit entering into the hollow opening of the longitudinal porf tion of said male member, the longitudinal portion of said male member being of such length that the inserted end is at a distance from the end portion of the female member when said members are placed in position, and binding material positioned adjacent to said inserted end and the female member for engaging and bind ing together said members, said binding material 'contacting a portion of one of said members within said distance between said inserted end and said end portion, the combination of the male member, the female member, and the binding material, being such that the longitudinal portion of the female member may be inserted into vthe hole in the lens from one side of the lens and such that the male member may be inserted into the hole in the lens from the other side of the lens and into the hollow opening of the female member'to form a telescopic connection between the two members and being bound together by said binding material.

9. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a female member having an end portion and a longitudinal portion, said end portion being extended laterally of said longitudinal portion and being adapted to engage the strap on one side of the lens and the said longitudinal portion being adapted to engage in the hole in the lens and said longitudinal portion having a hollow opening, and also having a slit in the side of the part of the longitudinal portion which is within the hole tion greater powers vof compression and expansion in a circumferential direction, and to give greater resiliency to the said female member, a

male member having an end portion and a longitudinal portion, said end portion being extendedlaterally of said longitudinal portion andbeing adapted to engage the strap on the other side of the lens and the said longitudinal portion being adapted to engage in the hollow opening-of the longitudinal portion of the female member to form a telescopic connection, andbinding material forengaging and binding together said members, the combination of the female member, the male member, and the binding material, being such that the longitudinal portion, of the female member may be engaged in the hole of the lens from one side of the lens, and such that the male member may be engaged in the opening of the female member from the other side of the lens and the members being resiliently mounted within the hole in the lens by the resilient action of the slit side of the female member, the said members being bound together by said binding vmaterial.

10. A fastening device adapted to attach the straps of a Vspectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a female member having an end portion and a longitudinal portion, said endl portion being adapted to engage the strap on one side of the lens and the said longitudinal portion being adapted to engage in the hole in the lens and said longitudinal portion having a hollow opening, a

hollow male member having an end portion andA a longitudinal portion, said end portion being adapted to engage the strap on the other side of the lens and the said longitudinal portion being nation of the female member, the male member,

and the binding material being such that the longitudinal portion of the female member may be engaged in the hole of the lens from one side of the lens, and such that the male member may be engaged in the hollow opening of the female member from the other side of the lens, and being resiliently mounted therein by the resilient action of the slit side of the male member, the said members being bound together by the said binding material.

l1. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a hollow female member having an end portion and 4a longitudinal portion, said end' portion being powersof compression and expansion in a circumferential direction and to give greater resiliency to the said female member, a hollow male member having an end portion and a longitudinal portion, said end portion being adapted to en- Y "a circumferential direction and to give greater resiliency to the said male member, and binding material for engaging and binding together said members, the combination ofthe female member, the male member, and the binding material being such that the longitudinal portion of the female member may be engaged' in the hole in' the lens from one side of the lens and such that the male member may be engaged in the open end yof the female member from the other side of the lens and being resiliently mounted therein by the resilient action of the slit side of the female member and by the resilient .action of the slit side of the male member, the said members being bound together by said binding material.

12.A fastening device adapted to attachthe straps of a spectacle mounting to the lens of the spectacle by employing a binding material, the lens having a hole for engaging the fastening device, comprising, in combination, a hollow female member the said hollow femalemember being hollow throughout its length with open ends and having an end portion and a longitudinal portion, said end portionv being adapted to engage the strap on one side of the lens and the longitudinal portion being adapted to engage in the hole in the lens, a male member having an end portionv and a longitudinal portion, said end portion being adapted to engage the' strap on the other side of the lens and the said longitudinal portion being adapted to enter the open end of the female member vto form a telescopic connection between th e two members, the longitudinal portion of said male member being of such length that the inserted end is at a distance from the end portion of the female member when said members are placed in position, and binding material positioned adjacent to said inserted end and the female member for engaging and binding together said members, said binding material contacting a portion of one f said members Within said distance between said inserted end and said end portion, the combination of the female member, the male member, and the binding means being such that the longitudinal portion of the female member may be inserted intol the hole of the lens from one side of the lens and being such that the longitudinal portion of the male member may be inserted into the open end of the female member to form a telescopic connection, and being bound in such connection by the binding means.

13. A fastening device adapted to attach the straps of a spectacle mounting to the lens of the spectacle, the lens having a hole for engaging the fastening device, comprising, in combination, a hollow female member, the said hollow female member being hollow throughout its length 4with open ends and having an end portion and a longitudinal'portion, said end portion being adapted to engage the strap on one side of the lens and 4the longitudinal portion being adapted to engage in the hole in the lens, a hollow male member, the said hollow male member being hollow throughout its length with open ends and having an end portion anda longitudinal portion, said end portion being adapted to engage the strap on the other side of the lens and the said longitudinal portion being adapted to enter the open end of the female member to form a telescopic connection between the two members, and binding means for binding Y the two members together, the combination of theA female member, the male member, and-the binding means being such that the longitudinal portion of the female member maybe inserted into the hole of the lens from one side of the lens and being such that the longitudinal portion of the male member may be inserted into the open end of the female'member to form a telescopic connection, and being bound in such connection by the binding means.

14. The process of fastening the straps of a spectacle mounting to the lens of the spectacle, the straps and the lens respectively having aligned holes for the receiving of a fastening device, comprising the following steps: construcing a female member with a hollow opening, constructing a male member with a longitudinal portion of a size and shape to slidably engage within the hollow opening of the female member, forming a strap-engaging end portion on each of said members, forming an opening in one of said members so as to extend through both ends of saidspectacle, the lens having a hole for the receiving of a fastening device, comprising the following steps: constructing a female member with a hollow opening extending through both its ends. constructing a male member with a hollow opening extending through both its ends and with a portion slidably engageable within the' hollow opening of the female member, inserting said members Ainto said hole from opposite sides of said lens so as to telescope the members together, placing binding material in operative position within the hollow openings of said telescopic members through an outer open end of one of said members, sliding the said straps on both sides of said lens over the telescoped members, contacting said straps with said binding material, and treating the said binding material so as to bind the members together and to bind the straps to the members.

DAVID SLOTSKY. 

